/* ===== CSS VARIABLES / THEMING ===== */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b27;
  --bg-card: #1a2035;
  --bg-input: #111827;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #06b6d4;
  --accent-hover: #0891b2;
  --accent-dim: rgba(6, 182, 212, 0.12);
  --border: #2d3748;
  --border-light: #1e2a3a;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --badge-bg: rgba(6, 182, 212, 0.15);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --nav-height: 64px;
  --radius: 10px;
  --radius-sm: 6px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --accent: #0369a1;
  --accent-hover: #075985;
  --accent-dim: rgba(3, 105, 161, 0.08);
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --badge-bg: rgba(3, 105, 161, 0.1);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background 0.2s ease, color 0.2s ease;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; }

/* ===== COMING SOON BANNER ===== */
.coming-soon-banner {
  background: linear-gradient(90deg, #0e7490, #06b6d4, #0e7490);
  background-size: 200% auto;
  animation: shimmer 4s linear infinite;
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  position: relative;
  z-index: 100;
}

.coming-soon-banner span { opacity: 0.85; font-weight: 400; }

@keyframes shimmer {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ===== NAVIGATION ===== */
nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 90;
  gap: 24px;
  backdrop-filter: blur(12px);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #06b6d4, #0891b2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
  letter-spacing: -0.05em;
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo-text span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  text-decoration: none;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  background: var(--accent-dim);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.15s;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
}

.btn-ghost:hover { color: var(--text-primary); background: var(--accent-dim); }

.btn-lg { padding: 12px 28px; font-size: 1rem; border-radius: var(--radius); }

/* ===== LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm { max-width: 640px; margin: 0 auto; padding: 0 24px; }

.page-content { padding: 48px 0 80px; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--badge-bg);
  color: var(--accent);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.badge-gray {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-color: var(--border);
}

.badge-green {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.2);
}

/* ===== STATS ROW ===== */
.stat-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.stat svg { opacity: 0.7; }
.stat strong { color: var(--text-primary); font-weight: 600; }

/* ===== SEARCH ===== */
.search-wrap {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 16px 12px 44px;
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.search-input::placeholder { color: var(--text-muted); }

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

/* ===== FORMS ===== */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input::placeholder { color: var(--text-muted); }

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

/* ===== CATEGORY TABS ===== */
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.cat-tab {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.15s;
  text-decoration: none;
}

.cat-tab:hover, .cat-tab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ===== LIBRARY CARD ===== */
.library-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  text-decoration: none;
  color: inherit;
}

.library-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
  color: inherit;
}

.lib-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.lib-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.lib-version {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.lib-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== CODE BLOCK ===== */
.code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  overflow-x: auto;
  position: relative;
}

.code-block .kw { color: #06b6d4; }
.code-block .str { color: #a5f3fc; }
.code-block .cm { color: var(--text-muted); font-style: italic; }
.code-block .ty { color: #67e8f9; }
.code-block .num { color: #34d399; }

[data-theme="light"] .code-block {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}
[data-theme="light"] .code-block .kw { color: #0369a1; }
[data-theme="light"] .code-block .str { color: #0f766e; }
[data-theme="light"] .code-block .cm { color: #94a3b8; }
[data-theme="light"] .code-block .ty { color: #0369a1; }
[data-theme="light"] .code-block .num { color: #047857; }

/* ===== SECTION HEADINGS ===== */
.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.section-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== GRID ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  nav { padding: 0 16px; gap: 12px; }
  .container { padding: 0 16px; }
}

/* ===== DIVIDER ===== */
.divider {
  height: 1px;
  background: var(--border);
  margin: 32px 0;
}

/* ===== FOOTER ===== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-brand { max-width: 280px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); margin-top: 10px; line-height: 1.6; }

.footer-col h4 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 0.875rem; color: var(--text-secondary); padding: 3px 0; text-decoration: none; transition: color 0.15s; }
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  max-width: 1200px;
  margin: 24px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== HERO ===== */
.hero {
  padding: 80px 24px 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(6,182,212,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero h1 span { color: var(--accent); }

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== COMING SOON OVERLAY (for hero) ===== */
.coming-soon-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(6,182,212,0.15), rgba(8,145,178,0.15));
  border: 1px solid rgba(6,182,212,0.35);
  border-radius: var(--radius);
  padding: 12px 24px;
  margin-bottom: 40px;
}

.cs-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.coming-soon-pill span {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
}

/* ===== PAGE HEADER ===== */
.page-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 40px 24px;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.page-header p { color: var(--text-secondary); font-size: 0.95rem; }

/* ===== SDK CARD ===== */
.sdk-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sdk-icon {
  font-size: 2rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.sdk-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); }
.sdk-card p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.5; }

/* ===== AUTH ===== */
.auth-page {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.auth-card h1 { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 6px; }
.auth-card .auth-sub { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 32px; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-footer { text-align: center; margin-top: 20px; font-size: 0.875rem; color: var(--text-secondary); }